Cactus and Tender Succulents forum: Newbie with potential Mold/Pest issue - seeking advice

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JoolD
Dec 15, 2017 1:47 PM CST
I recently repotted a succulent (the green escheveria - I think) with three little cacti. I have had the succulent for a few years. The cacti are new. I potted them about 2 weeks ago. I watered after the first week as the weather in Austin, Tx, USA was starting to get a bit colder. This morning, I noticed 1) some black spots on the succulent; 2) some sort of "holes" on the round cactus; 3) some white powder at the bass of the round cactus; and 4) some yellow/white stuff - mold? near the roots of one of the cacti. I am not sure what to do.


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Name: Daisy I
Reno, Nv (Zone 6b)
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DaisyI
Dec 15, 2017 8:36 PM CST
Welcome!

Yes, the Echeveria (I think you are right but if not, someone will be along presently to correct us both), is suffering from mildew. Cool temperatures and wet leaves could cause that. If temps are cool and the plants are outside, don't get the plant bodies/leaves wet. Don't even water.

The barrel cactus (looks like a Parodia) may have the beginnings of mealybugs or scale insects. The third plant, a Euphorbia, ... do those little white spots look cottony and squish easily? If so, mealybugs. To test if you have insects, moisten a Q-tip with alcohol and try to wipe them off.

On to the bad news: When you design a community pot, make sure all your plants need the same care. Your chosen plants are not going to be happy together.

Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

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Name: Nancy Mumpton
Sun Lakes, AZ (Zone 9b)
I'm NancySLAZ on some sites
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nmumpton
Dec 16, 2017 7:24 PM CST
Yes, you definitely have mealy bug on these plants. Daisyl is right one with her comments. You need to treat the mealy bugs with alcohol on a Q-tip and then keep checking for more coming along. Also, stop watering. Cold and wet is very bad for succulents. Your may want to separate these plants in the spring. For now just watch them for recurring bugs and stop watering.
"Gardening is a humbling experience"--Martha Stewart

JoolD
Dec 18, 2017 10:45 AM CST
Daisyl and nmumpton,

Thank you both so much for responses. I appreciate it. I have done as instructed and tried to treat the areas with qtips. I am also trying to dry the soil with a fan in the area. Hopefully, things will improve shortly and I can successfully repot in the future!

JoolD
Dec 18, 2017 4:50 PM CST
Daisyl and nmumpton,

Thank you both so much for responses. I appreciate it. I have done as instructed and tried to treat the areas with qtips. I am also trying to dry the soil with a fan in the area. Hopefully, things will improve shortly and I can successfully repot in the future!
Name: Paula
NYC suburbs (Zone 6b)
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Turbosaurus
Dec 20, 2017 6:08 PM CST
To take this to the longer term;
A lot of those leaves that are showing damage on your echiveria MAY not make it- if they shrivel up and die, don't be too disappointed- It may have a wonky haircut for a little while, but often, if you give it what it needs (which you have done successfully for a couple years) it will come back better than ever-

I just don't want you to call it quits if the damage that's been done at the base of some of those leaves cause the leaf to fall off/rot- it doesn't mean the plant is getting worse, it just means the damage was done at the leaf base and the repercussions aren't apparent yet.

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